Summatob



Se t. 19, 1939. H, PETTERSS-ON El AL SUMMATOR 2 Sheets-Sheet 2 Filed June 11, 1935 Hiolmar LQonard e'fi'ergson Karl Hildu n Lundc vnyf (NVE N To E Patented Sept. 19, 1939 UNITED STATES PATENT OFFICE Lundqvist, Stockholm, Sweden,

operativa Forbundet, holm, Sweden Application June 11,

assignors to Ko- Forening U. P. A., Stock- 1936, Serial No. 84,642

In Sweden June 18, 1936 4 Claims.

The present invention relates to a summator device which is particularly adapted to sum up the values of objects having different unit values, such as coins or the like.

One object of the invention is to provide a simple form of summator made up of escapement devices which are structurally connected in series.

Another object is to produce a summator with serially connected escaping devices which are journalled on one another to form a closed unit.

Other objects will be apparent from the following detailed description of one embodiment of the invention illustratively exemplified in the accompanying drawings, in which Figure 1 shows a diagrammatical plan view of the device partly in section.

Figure 2 is a section on line 2-2 of Figure 1.

Figure 3 is an enlarged longitudinal cross section in vertical direction of the very calculating device.

Figures 4 to 6 showing sections of details on lines 4-4, 5-5 and 6-6 of Figure 3.

Figure '7 is an enlarged view of the coupling mechanism for stop 1 in Fig. 1, and

Figure 8 is a vertical section taken on line VIII--VIII in Fig. '7.

In the embodiment shown in Figure l the impulse members consist of a number of stops I5, corresponding to, for example, the coin val- 3 ues of 5, 10, 25 and cents and 1 dollar. These stops are actuated by the entered coins simultaneously or successively in the manner described hereafter. The stops l5 are carried by arms Iii-20. These arms are fixed to displaceable sleeves 2l-24 and to a shaft 25 respectively and by means of a number of return springs H-l5 provided on a stationary shaft 9| the stops l-5 are held in their normal positions. In different coin grooves 92, which correspond to the coin values, there are provided coupling members 94 displaceable in recesses 93. Further, there is a number of pistons 96, which are carried by a frame 95 and which enter recesses provided in the coin grooves. The frame 95 is held pressed by means of helical springs 91 with its one end portion 98 against a rotatable cam disc 99, which is continuously rotated, for instance by means of a motor (not shown), whereby the frame 95 is put into a reciprocating movement the length of 50 which corresponds to about the thicknesses of the coins. The rhythm of the reciprocation is defined by the shape of the cam surface and the rotation speed of the cam disc 99. If a coin I00 has been inserted through the coin chute I05 into one of the coin grooves the coin will be caught between the piston 96 and the coupling member 94 so as to transmit the movement of the piston to the coupling member which in turn will actuate the respective stop, the impulse being thereby transmitted to one of the sleeves 2l24 or to the shaft 25, respectively (see Figs. 7 and 8). By this displacement, the coin I00 assumes a position above the chute 196 leading to the coin container. When now the cam disc 99 stops pressing against the end portion 98, the coin I00 is released and falls down into the chute I06. When the frame returns to its normal position, the piston 96 releases the coin which drops out of the coin slot and allows the springs ll-l5 to restore the displaced stop l-5, arms l6-20, and sleeves 21-24 to their normal positions. These sleeves and this shaft, respectively, are mounted in and control a summator device 26, the construction of which will be set forth in the following. The counting member of the summator device consists of a shaft 21 provided with a toothed wheel 28. Wheel 28 meshes with a toothed wheel 29, which is rotatably mounted on a shaft 30. One end of the shaft 30 is journalled in a bearing bush 3|, in which one end of a helical spring 32, is fixed at 33. The other end of the spring 32 is fixed to the shaft 39 at 34. A ratchet wheel 35 is rigidly connected to the shaft and cooperates with a catch 36, which is pivoted to the toothed wheel 29 so as to engage resiliently with the ratchet wheel 35. The spring 32 tends to rotate the ratchet wheel 35 in the blocking direction of the same, so that the catch 36 transmits the spring force to the toothed wheel 29 and the pinion 28 tends to turn in the direction of the arrow. Whenever upon actuation of the calculating device 26 the shaft 21 is freed for rotation through an angle corresponding to the sum of the entered values, the spring 32 will cause the toothed wheels 28 and 29 and the shaft 30 to carry out said rotation. After each operation of the machine the shaft 30 is adjusted to zero by being, against the action of the spring 32, turned against the direction of the arrow, which operation does not rotate the toothed wheels 28, 29, as in this direction the catch 36 slips the teeth of the ratchet wheel 35. By this resetting operation the spring 32 is rewound to its original tension.

The resetting is effected by means of a gear (not shown) which couples the toothed wheel 35 to the motor driving the cam disc 99.

Referring to Figure 3 the summator 26 comprises a stationary frame part 31, formed as a cylindrical cap 38, on to the outer end of which a cover 39 is secured by means of screws or the like. The sleeves Al-24 are slidably provided one outside the other and on the shaft 25. The inner ends of the sleeves and of the shaft, respectively, carry rotatably a number of discs 4044. For this purpose the inner ends of the sleeves 2l24 are formed as flanges, against which the discs 49- 43 are held in axial direction by means of rings 5[3--53. In a similar manner the inner end of the shaft 25 is provided on one hand with a flange 49 and on the other hand with a flange 5-4 retaining the disc 44 between them. The flange 54 is formed from a sleeve 55 disposed on and fixed to the innermost end of the shaft 25. The inner end of the shaft 2'! is provided with a bore 56, in which the sleeve 55 is mounted axially displaceable and rotatable, and the shaft 21 itself is journalled in a ball bearing 51, provided in the cover 39. Furthermore, the end of the shaft 27 is formed as a disc 73, which constitutes a coupling element and is provided with a co-axial cylindrical recess 59. The said recess is adapted to receive the disc 44. The disc 44 is provided with a stop 6i which stop, in the inoperative or initial position of the disc 44, shown in Figures 3 and 6, cooperates with a stop 6i projecting from the inner wall of the cylindrical recess 59. Since, by means of the spring 32, shown in Figure 1, the toothed wheel 28 has a constant tendency to rotate in a certain direction also the shaft 21, the disc 13 and the stop 6! tends constantly to rotate in the direction of the arrow in Figure 6, so that the stop 6i rests against the stop G9. On the inner wall of the cylindrical recess 59 there is also mounted another stop 52 which is axially and angularly displaced relative to stop 6 I. Thus, in the position shown in the figures the stop 66 is in the way of the stop 64 but does not extend into the path of the stop 62. If, on the other hand, the disc 44, upon actuation of the impulse member 5 and the shaft 25 is displaced to the right in Figure 3, the stop 68 will come into the path of the stop 62. At a certain point of its displacement, the disc 44 has moved the stop 60 out of the path of the stop 6! whereupon the last mentioned stop is released and the disc 73 turns the stop 52 into engagement with the stop 69. During this operation the disc 44 is held in its original angular position by means of a pin 68 extending into a hole 63 of the adjacent disc 43, which will be more particularly described below. The cam disc 99, which controls the axial displacement of the disc 44, is shaped in such a manner and rotated at such a speed, that the disc 44 is restored to its original position only after a time sufficient to rotate the freed stop 6! on disc it past stop 60 on disc 44. When the disc 44 is restored from its right hand intermediate position, into the initial position shown in Figure 3, the stop 51] returns into the path of the stop 6! Simultaneously the stop 66 leaves the path of the stop 62, so that the disc "83 is released for the rest of a whole revolution until the stop 6! strikes again the stop 68.

The pin 58 is rigidly connected to the preceding coupling element, which consists of a disc 72 provided with a peripheral bearing surface 93. This surface contacts with a corresponding surface of thedisc 73. Further, the disc 12 is provided with a central circular opening ll, through which the shaft 25 passes freely. Within a central cylindrical recess 88 of the disc 12, there is provided the disc 43, which belongs to the same coupling element. As shown in Figure 5, the latter disc has two stops 82, 83, between which the angular distance is half a turn. This means that the disc 43 is intended for entering the value of 50 cents, corresponding to one half of the 1- dollar value entered by means of the disc 44 in Figure 6. The disc 12 is provided with two stops one of which 84 corresponds to stop 6! on disc 73 and the other 85 to stop 62 on disc F3.

Owing to the contact of stops 6! or 82 with the stop 58, the disc 44, the pin 68 and the disc 12 tend to rotate in the direction of the arrow in Figure 5. Thus, in the initial position of the disc 43, shown in Figure 3 the stop 84 is held in contact with the stop 82, while the disc 43 is held in its angular position by means of the pin 6'! extending through a hole 86. If, however, the impulse member for 50-cent coins is actuated so that the hollow shaft 24 with the disc 43 fixed thereto is displaced towards the right in Figure 3, the stop 83 will come in the path of the stop 85 and upon further displacement, the stop 82 releases its blocking engagement with the stop 84 so that the disc 72 can rotate in the direction of the arrow until the stop 85 comes into engagement with the stop 83. The angle vl traversed by the disc 72 before the latter is arrested by the stop 85 is at least equal to the sum of angular thicknesses of the stops 82 and 84 (aid-a2). When the disc 43, after the impulse having ceased, returns from its intermediate position to its initial position the stop 83 comes in the path of the stop 84, and slides out of engagement with the stop 85, so that the latter is released and the disc '12 completes the rest of half a revolution until the stop 84 comes into engagement with the stop 83.

The pin M is fixed to the disc ll, which in its turn by means of stops cooperates with the disc 42. The latter disc is guided by a pin 66 provided on the preceding disc 10 etc. The discs 69-12 are substantially alike, but have their stops disposed at different angles and the outermost disc 69 is slidably mounted against the end plate 31.

The discs 40-44 are substantially alike except that the mutual angular distances between the stops, i. e. the pitches of the discs becomes smaller and smaller the more to the left in Figure 3 the disc is located. The pitch is determined by the value associated with the respective impulse member. Thus, in Figure 4 the 5-cent disc 40 is shown, which is provided with 20 stops or teeth, one of which 81, in its initial position, blocks a stop 88 of the disc 69. The pin 64, which is mounted on the end plate or blocking device 3'! of the summator prevents the disc 40 from turning in the direction of the arrow. When the disc 40 moves to its intermediate position on account of an impulse transmitted by means of the hollow shaft 2!, another stop 89 on the disc 40 comes in the path of an auxiliary stop 90 of the disc Bil. Thereafter the stop 87, releases the stop 88 so that the disc 69 can turn the stop 9i) into contact with the stop 89. When the disc 40 returns from the intermediate position to the initial position the stop 9| comes in the path of the stop 88 after which the stop 89 releases the engagement with the stop 98, so that the disc 69 is able to rotate the stop 88 into engagement with the stop 9!.

On account of the torsional force, which acts constantly on the shaft 2? and which is transmitted by means of the stops and the pins 64-68 to the blocking device 3? there will always be a butt contact between the parts of the summator. This static condition is disturbed only momentarily when the calculating device receives impulses, which almost instantaneously cause an adjustment of the appertaining coupling member and thus of the shaft 21, which adjustment corresponds to the appertaining value. Thus this counting shaft of the summator will adjust itself to an angular position corresponding to the total amount entered in a certain operation.

In the embodiment shown, certain dimensioning rules are applicable, which perhaps are most clearly understood when regarding Figure 4. In order to insure axial displacement of the stop 88 from the intermediate position to the initial position, free of the stop 81, the primary and the auxiliary stops 88, 90 must be angularly staggered relatively to each other at least so much that the angular distance V2: between them is equal to the sum of the angular thickness V1 of a stop 8'! and the angular thickness V2 of the stop 88, possibly plus a whole number of pitches t or where n is a whole number.

On the other hand the angular distance V23 must not be too large, because in such a case the stops 90 of the third group could lock against the tooth 92 when passing from initial position to intermediate position. Therefore, the said angular distance must be less than the number of pitches minus the sum of the angular thickness V1 of a stop 89 and the angular thickness V3 of the stop 90, possibly increased by a whole number of pitches or Of course the stops themselves must not be too thick, either. Thus, the sum of the angular thickness V2 of the stop 88 and the angular thickness V3 of the stop 90 must be less than the pitch minus the double angular thickness V1 of the teeth or Having now described our invention, what we claim as new and desire to secure by Letters Patent is:

1. A calculating machine to sum up different unit values, comprising a housing, a counting member including a rotary shaft journalled in one wall of the housing and on the inner end of said shaft a disc having an inwardly open cylindrical recess therein, means to give to said shaft and disc a tendency for rotation in one direction, an axially displaceable pinion secured against rotation on the opposite wall of said housing, a series of intermediary successive discs axial with said first mentioned disc and said pinion, each disc being provided on one side thereof with a cylindrical recess and carrying on its opposite side an axially displaceable pinion secured against rotation with respect to the disc, a stop radially projecting from the inner wall of each of said cylindrical recesses and normally engaging one tooth of the adjacent pinion of the next disc, separate means for each of said pinions to axially displace the same into an intermediary position, whereby the stop of the adjacent disc is released and all the preceding discs and the counting shaft are set free to move in one direction, and means to restore each displaced pinion to its initial position, upon release of said displacing means after a predetermined period of time, whereby said adjacent disc is again arrested when its stop abuts against the next tooth of the restored pinion.

2. A calculating machine, as claimed in claim 1, comprising an auxiliary stop on each of said discs projecting radially from the inner wall of the cylindrical recess and being axially and angularly staggered with respect to the primary stop on the same disc, said auxiliary stop being adapted to engage a tooth of the adjacent pinion in the intermediary position of the latter, when said disc has partly traversed a distance equal to the pitch of said adjacent pinion.

3. A calculating machine, as claimed in claim 1, comprising further a pin on each of said intermediary discs and on the wall of the housing opposite the counting shaft, each of said pins being eccentrically arranged and projecting parallel to the axis of rotation through aholeinthe corresponding pinion, to hold said pinion against rotation relative to the corresponding disc and the housing, respectively, without preventing axial displacement of the pinions.

4. A calculating machine, as claimed in claim 1, in which said means for axial displacement of the pinions comprise a plurality of coaxial tubular shafts, longitudinally slidable one within the other, each shaft carrying on its end within said housing one of said pinions free for rotation about said shaft but secured against axial displacement with respect to the latter, and separate control members connected to the outer ends of said coaxial shafts, respectively, to axially shift the latter for independent displacement of the individual pinions.

I-IJALMAR LEONARD PETTERSSON. KARL HILDING LUNDQVIST. 

